[PLUG] Bug in rust-coreutils breaks ssh

[Walt Mankowski via plug <plug@lists.phillylinux.org>]

I'm running Ubuntu 25.10 on my home Linux server. Last night I
installed what I thought were some routine updates including a new
kernel, which required a reboot. Everything seemed fine, but then this
morning I discovered I was unable to ssh in. It would get almost to
the shell prompt and just sit there until it eventually timed
out. Ctrl-C didn't work either. This occurred even when I tried sshing
from the same box.

I checked a bunch of obvious things. I confirmed sshd was running. I
confirmed it was getting network traffic. Traffic on other ports was
working, just not ssh.

Eventually I found this report from someone having a similar problem
who traced it to stat(1):

https://bugs.launchpad.net/ubuntu/+source/rust-coreutils/+bug/2130843

In 25.10, Ubuntu began replacing utilities in coreutils which were
originally written in C with Rust versions, and one of these is
stat. This person thought there's a bug with how it handles
automount. I'm not automounting anything, but I still had the
problem. There are a number of scripts under /etc/update-motd.d that
get run from an ssh login, and two of them call stat. I replaced those
calls with gnustat, as it suggested, and suddenly I could login again!

I'm documenting it here in case anyone else has the same problem and
can't figure out what to do.

Walt
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